Anorexia

Anorexia (pronounced an-uh-rek-see-uh)

(1) In clinical medicine, loss of appetite and inability to eat.

(2) In psychiatry, as anorexia nervosa, a defined eating disorder characterized by fear of becoming fat and refusal of food, leading to debility and even death.

(3) A widely-used (though clinically incorrect) short name for anorexia nervosa.

1590–1600: From the New Latin, from the Ancient Greek ἀνορεξία (anorexía), the construct being ἀν (an) (without) + ὄρεξις (órexis) (appetite; desire).  In both the Greek and Latin, it translated literally as "a nervous loss of appetite".  Órexis (appetite, desire) is from oregein (to desire, stretch out) and was cognate with the Latin regere (to keep straight, guide, rule).  Although adopted as a metaphorical device to describe even inanimate objects, anorexia is most often (wrongly) used as verbal shorthand for the clinical condition anorexia nervosa.  The former is the relatively rare condition in which appetite is lost for no apparent reason; the latter the more common eating disorder related to most cases to body image.  Interestingly, within the English-speaking world, there are no variant pronunciations.

Anorexia Nervosa and the DSM

The pro-ana community has created its own sub-set of standard photographic angles, rather as used car sites typically feature certain images such as the interior, the odometer, the engine etc.  Among the most popular images posted on "thinspiration" pages are those which show bone definition through skin and, reflecting the superior contrast possible, there's a tendency use grayscale, usually converted from color originals.  The favored body parts include the spine, hip bones, clavicles (collar bones) and the shoulder blades.     

Although documented since antiquity, the condition in its modern form wasn't noted in western medical literature until an 1873 paper presented to the Royal College of Physicians (RCP) called “Anorexia Hysterica”, a description of a loss of appetite without an apparent gastric cause.  That same year, a similar condition was mentioned in a French publication, also called “l’anorexie hystérique”, and described food refusal combined with hyperactivity.  Although the author of the earlier work had within a year changed the descriptor to “Anorexia Nervosa”, the implication in all these papers was of an affliction exclusively female, something very much implied in “l’anorexie hystérique”, hysteria then a mainstream diagnosis and one thought inherently "a condition of women".

A slight Lindsay Lohan demonstrates "an anorexic look" which is something distinct from the clinically defined condition "anorexia nervosa" although there's obviously some overlap.

After its acceptance as a psychogenic disorder in the late nineteenth century, anorexia nervosa (AN) was the first eating disorder placed in the American Psychiatric Association's (APA) Diagnostic and Statistical Manual of Mental Disorders (DSM).  In the first edition (DSM-I (1952)), it was considered a psycho-physiological reaction (a neurotic illness).  In the DSM-II (1968), it was listed with special symptoms & feeding disturbances, which also included pica and rumination.  In DSM-III (1980), eating disorders were classified under disorders of childhood or adolescence, perhaps, at least in part, contributing to the under-diagnosis of later-onset cases.  At that time, the American Psychiatric Association (APA) created two specific categories that formally recognized the diagnosis of eating disorders: AN and binge eating (called bulimia in DSM-III and bulimia nervosa (BN; the obsessive regurgitation of food) in both the revised DSM-III (1987) and DSM-IV (1994).  In the DSM-IV, all other clinically significant eating disorder symptoms were absorbed by the residual categories of eating disorder not otherwise specified (EDNOS) and binge-eating disorder (BED), noting the disorders were the subjects for further research.  Subsequently, When the DSM-IV was revised (2000), eating disorders moved to an independent section.  The DSM-5 (2013) chapter for eating disorders added to the alphabet soup.  In addition to pica, AN, BN and BED, DSM-5 added  avoidant/restrictive food intake disorder (ARFID) and other specified feeding or eating disorder (OSFED), the latter including some other peculiar pathological eating patterns, like atypical AN (where all other criteria for AN are met, but weight is in the normal range).